I think you are referring to the CAFE standards which are part of what I am refe...

		ajmurmann 4 months ago \| parent \| context \| favorite \| on: Detroit's carmakers to save billions in emissions ... I think you are referring to the CAFE standards which are part of what I am referring to. However, there is also a weight-based rule for tax write-offs: https://www.kbb.com/car-advice/section-179-tax-break-suvs-tr...